#include"rect.h"
Rectangle::Rectangle(int left,int top,int right, int bottom):
	       m_left (left),m_right(right),m_top(top), m_bottom(bottom){ }

void Rectangle::show()
{
	cout << "left-top point is (" << m_left << "," << m_top << ")" << '\n';
	cout << "right-bottom point is(" << m_right << "," << m_bottom << ")" << '\n';
}
void Rectangle::assign(int left, int top, int right, int bottom)
{
	m_left = left;
	m_right = right;
	m_top = top;
	m_bottom = bottom;
}
int Rectangle::area()
{
	return 2*(m_right - m_left) + (m_bottom - m_top);
}
int Rectangle::perimeter()
{
	return 2 * ((m_right - m_left) + (m_bottom - m_top));
}